Geomagnetic storms in the Antarctic F-region. II - Physical interpretation

Details Geomagnetic storms in the Antarctic F-region. II - Physical interpretation Geomagnetic storms in the Antarctic F-region. II - Physical interpretation

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jatp...51..851r&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 51, Nov.-Dec. 1989, p. 851-866.

Physics

41

Antarctic Regions, F 2 Region, Ionospheric Electron Density, Magnetic Storms, Solar Terrestrial Interactions, Annual Variations, Atmospheric Composition, Diurnal Variations, Geomagnetism, Ionospheric Ion Density

Scientific paper

The observed seasonal and diurnal variation of the F2 layer's maximum electron concentration, NmF2, is presently interpreted in terms of a mean dc effect and a diurnal-variation ac effect. It is suggested that there must be direct energy input at mid-latitudes during geomagnetic storms in order for the dc effect to be generated, and that the energy sources are the precipitation of ring current ions and the penetration of the cross-tail magnetospheric electric field to mid-latitudes in the first few hours of the storm.

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